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Question
Where a 300mA rcd to BS EN 61008 has been used for fire protection the following sequence of tests must be carried out to prove its correct operation
(A) x1/2 x1 and x5
(B) 150mA, 300mA and 1500mA
(C) Operate the test button, 150mA and 300mA
(D) 150mA, 300mA, operate the test button
Answer
This answer is hidden. It contains 35 characters.
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Q:
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(A) 0.4 sec
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Q:
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Q:
State one situation within a domestic installation which would require the installation of an RCD
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The purpose of an initial verification as described in GN3 is
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(B) To confirm by inspection and test that the installation complies with the design and construction aspects of EAWR 1989
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Investigative journalism has been…
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Q:
The maximum tabulated Zs for a protective device as shown in BS 7671 is 1.44Ω, the maximum permissible measured Zs will be
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(B) 1.43Ω
(C) 1.15Ω
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Q:
Additional protection will be required for
(A) Circuits which cannot meet the required disconnection time
(B) A lighting circuit in a room containing a bath or a shower
(C) Installations where there is no protective bonding
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Q:
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